I did a really really stupid thing I have been struggling with my USB headset for a while trying to get the recording sound in Audacity up to a decent level but without much luck.I am on Nadia Cinnamon and my USB headset is a Sennheiser PC 36 CALL CONTROL and I wanted to do some voice recording.Then I came a cross this thread that suggested to try something in another thread and even though the thread was from 2010 I went ahead and did it and now I am without sound